Preliminary Digital Surficial Geologic Map of the Lusk 30' x 60' Quadrangle, Converse and Niobrara Counties, Wyoming, and Northwestern Nebraska (2001)

Hallberg, L.L., and Case, J.C., 2001, Preliminary digital surficial geologic map of the Lusk 30' x 60' quadrangle, Converse and Niobrara counties, Wyoming, and northwestern Nebraska: Wyoming State Geological Survey Hazards Section Digital Map 01-5, scale 1:100,000.